| --- a/pagespeed/kernel/thread/pthread_rw_lock.cc | |
| +++ b/pagespeed/kernel/thread/pthread_rw_lock.cc | |
| @@ -31,7 +31,7 @@ | |
| // | |
| // Other OS's (FreeBSD, Darwin, OpenSolaris) documentation suggests | |
| // that they prefer writers by default. | |
| -#ifdef linux | |
| +#if defined(linux) && defined(__GLIBC__) | |
| pthread_rwlockattr_setkind_np(&attr_, | |
| PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP); | |
| #endif |